body{
    background-color: #f5f5f5;
}
.login-form{
    margin: auto;
    width: 360px;
    margin-top: 200px;
}
.form-group{
    padding-bottom: 10px;
    position: relative;
}
.form-group .text-danger{
    position: absolute;
    left: 0;
    bottom: -20px;
    font-size: 14px;
}